General Science MCQ -39

Science Railways,UPSC,SSC,IAS Prelims,KPSC,IBPS,SBI,UPPSC,RPSC

A: Non-metals do not react with water. R: Some of the reactive non-metals are kept in water to protect them from the influence of air.

Both A and R are true and R is correct explanation of A .

Both A and R are true but R is not the reason of A .

A is true but R is false .

A is false but R is true .

A: It is possible to culture viruses outside specific host cells. R: In a virus, a small amount of genetic material in the form of DNA or RNA is enclosed in a protective protein coat.

Both A and R are true and R is correct explanation of A .

Both A and R are true but R is not the reason of A .

A is true but R is false .

A is false but R is true .

A: Dispersion of light also takes place when white light passes through water drops. R: The appearance of a rainbow in the sky is due to dispersion of sunlight by the water droplets present in the upper regions of the atmosphere.

Both A and R are true and R is correct explanation of A .

Both A and R are true but R is not the reason of A .

A is true but R is false .

A is false but R is true .

Which of the following are synthetic indicators to test acid and bases in laboratory? 1. Turmeric 2. Litmus Paper 3. Methyl Orange 4. PhenolphthaleinChoose the correct options:

Consider the following statements: 1. Greater the pH value of a solution, greater is the concentration of H3O+ ions in it. 2. pH value 14 means maximum concentration of (OH)–ions. Which of the above statement is / are true?